You will notice with todays release shop inventory order is now save-able.

We've also added an improvement:
Your shop inventory page is now ALSO sortable by newest, alphabetical, price and most popular - which is a feature some of you have requested in the past @stop4stuff @teebee

Also remember it takes a few minutes for your changes to be propagated throughout the site, so you hit save and something DOES happen, it just takes a moment!